Consol Blinds & Homes

How to Install Roller Blinds to Minimize Light Leakage

Perfect for bedrooms, media rooms, or any space where you need strict light control, installing roller blinds effectively can be key to blocking out unwanted light.

This guide will provide you with step-by-step instructions on how to install roller blinds tightly and accurately to ensure minimal light leakage.

What You'll Need:

  • Roller blinds specifically labeled as "blackout" or "light-blocking"
  • Measuring tape
  • Pencil
  • Drill
  • Screws and wall plugs
  • Screwdriver
  • Level
  • Metal tape (optional for sealing edges)

Step 1: Choosing the Correct Roller Blinds

Measure Precisely: Carefully measure the dimensions of your window. To minimize light gaps, consider outside mount blinds which cover a larger area than the window itself, overlapping the window frame.

Select Appropriate Blinds: Opt for blinds with side channels or those that can be cut to size, ensuring there are no gaps on the sides once installed.

Step 2: Preparing for Installation

Unpack and Check: Confirm that your roller blinds package includes all mounting hardware and that the blinds fit the intended window space.

Mark the Bracket Locations: Using a level, mark where you will place the brackets. For minimal light leakage, position them so the blinds will extend slightly beyond the edges of the window frame.

Step 3: Installing the Brackets

Drill Holes: At the marked spots, drill holes for the screws. If you’re mounting into drywall, use wall plugs to secure the screws firmly.

Secure the Brackets: Attach the brackets with the screws, ensuring they are perfectly level. Uneven brackets can lead to gaps which let light through.

Step 4: Hanging the Roller Blind

Mount the Blind: Slot the roller blind into the brackets according to the manufacturer's instructions. Ensure it is securely in place and rolls up and down smoothly.

Check for Gaps: Once mounted, check for any small gaps where light might enter. Adjust if necessary.

Step 5: Sealing Edges (Optional)

Apply Metal Tape: For extra light blocking, consider applying thin metal tape along the edges of the blind where it meets the wall. This helps seal any minor gaps that could allow light through.

Step 6: Additional Tips for Light Control

Use Curtains: Adding a layer of heavy curtains over the blinds can further reduce light leakage.

Weather Stripping: Apply adhesive weather stripping along the sides of the blinds to block out light.


With these detailed steps, your roller blinds should effectively block out most light, making your space perfect for sleep or viewing screens without glare. Proper installation is crucial, so take your time to measure, align, and secure everything correctly.

Additional Advice:

Regular maintenance can help keep your blinds functioning well and remaining effective at blocking light. Dust and wipe them down periodically to ensure smooth operation.